\section{Diffusion}
\label{sec:diffusiondiscussion}
Of cause diffusion is closely related to the discussion about ability to innovate and the competition in the market. According to Rogers innovation is a key component in the diffusion of an innovation and he concludes that the rate of adoption is a good indicator of positive diffusion. 

According to their explosive market share in mid-2000s, Symbian attracted both the early and the late majority of customers in the market and they definitely crossed the chasm (at least in Europe). But when the so called paradigm shift occurred, which actually changed the conception of a smart-phone, by the introduction of iOS and Android, there was arguably also a shift in customer mindsets. We propose that one can refer to this as a shift in paradigm from hardware-oriented compatibility to software-oriented compatibility. Before iOS and Android introduced their huge application stores Symbian customers were in fact pragmatists - cared about the company, the brand, the product, complementary products and reliability of the device, in terms of hardware at least. With the introduction of huge application stores the criteria for a successful smartphone platform was complementary products in terms of software, which Symbian did not provide and support at all compared to iOS:

\begin{quote}

\textit{``By the time that the iPhone launched, there were 10.000 apps available for the Symbian platform... And while 10,000 apps is no mean feat, it did take over seven years for Symbian to reach that milestone, while Apple hit its first 100,000 in a little over a year after releasing the first SDK for iOS.}'' \citep{BEST}

\end{quote}

